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NTE1761 (Active High) & NTE1762 (Active Low) Integrated Circuit Infrared Remote Control Preamp
Features: D High Frequency Amplifier with a Control Range of 66dB D Synchronous Demodulator and Reference Amplifier D AGC Detector D Pulse Shaper D Q-Factor Killing of the Input Selectivity, which is Controlled by the AGC Circuit D Input Voltage Limiter Absolute Maximum Ratings: Supply Voltage (Pin8), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2V Output Current Pulse Shaper (Pin11), I11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA Voltages Between Pins (Note 1) Pin2 and Pin15, V2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V Pin4 and Pin13, V4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V Pin5 and Pin6, V5-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V Pin7 and pin10, V7-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V Pin9 and Pin11, V9-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25 to +125C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Note 1. All pins except Pin11 are short-circuit protected. DC Electrical Characteristics: (TA = +25C, VCC = V8 = 5V unless otherwise specified)
Parameter Supply (Pin8) Supply Voltage Supoply Current VCC ICC = I8 V2-15(P-P) f = 36kHz, Note 2 f = 36kHz, Note 3 AGC Control Ragne (Without Q-Killing) Input Signal for Correct Operation (Peak-to-Peak) Q-Killing Inactive (Peak-to-Peak) Q-Killing Active (Peak-to-Peak) V2-15(P-P) Note 3 V2-15(P-P) I3 = I14 < 0.5A V2-15(P-P) I14 = I3 = Max 4.65 1.2 5.0 2.1 5.35 3.0 V mA V V dB mV V mV Symbol Test Conditions Min Typ Max Unit
Controlled High Frequency Amplifier (Pin2 and Pin15) Minimum Input Signal (Peak-to-Peak) - - 60 0.02 - 28 15 - 66 - - - 25 5 - 200 140 -
Note 2. For NTE1761, voltage at Pin9 is HIGH (-I9 = 75A). For NTE1762, voltage at Pin9 is LOW (I9 = 75A). Note 3. For NTE1761, voltage at Pin9 remains LOW. For NTE1762, voltage at Pin9 remains HIGH.
DC Electrical Characteristics (Cont'd): (TA = +25C, VCC = V8 = 5V unless otherwise specified)
Parameter Inputs Pin2 Voltage Pin15 Voltage Pin2 Resistance Pin2 Capacitance Input Limiting, Pin1 Outputs Output Voltage HIGH (Pin9) Output Voltage LOW (Pin9) Output Current, Output Voltage HIGH -V9-8 V9 -I9 -I9 = 75A I9 = 75A V9 = 4.5V V9 = 3.0V V9 = 1.0V Output Current, Output Voltage LOW Output Resistance Between Pin7 and Pin10 Pulse Shaper (Pin11) Trigger Level in Positive Direction Trigger Level in Negative Direction Hysteresis of Trigger Levels AGC Detector (Pin12) AGC Capacitor Charge Current AGC Capacitor Discharge Current Q-Factor Killer (Pin3 and Pin14) Output Current (Pin3) Output Current (Pin14) -I3 -I14 V12-16 = 2V V12-16 = 2V 2.5 2.5 7.5 7.5 15 15 A A -I12 I12 3.3 67 4.7 100 6.1 133 A A V11 V11 V11 Voltage Pin9 changes from HIGH to LOW Voltage Pin9 changes from LOW to HIGH 3.75 3.4 0.25 3.9 3.55 0.35 4.05 3.7 0.45 V V V I9 R7-10 V9 = 0.5V - - 75 75 75 75 3.1 0.1 0.1 120 130 140 120 4.7 0.5 0.5 - - - - 6.2 V V A A A A k V2 V15 R2-15 C2-15 V1-16 I1 = 3mA 2.25 2.25 10 - - 2.45 2.45 15 3 0.8 2.65 2.65 20 - 0.9 V V k pF V Symbol Test Conditions Min Typ Max Unit
Note 4. Undistorted output pulse with 100% AM input.
Pin Connection Diagram
Input Signal 1 Input Signal 2 Q Factor Input 3 Feedback Cap Input 4 Feedback Cap Input 5 Feedback Cap Input 6 Coil Input 7 VCC 8
16 GND 15 Input Signal 14 Q Factor Input 13 Feedback Cap Input 12 AGC Detector Time Constant 11 Pulse Shaper Capacitor 10 Coil Input 9 Output
16
9
.260 (6.6) Max
1
8
.785 (19.9) Max
.300 (7.62)
.200 5.08) Max .245 (6.22) Min
.100 (2.54)
.700 (17.7)

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